Industrial Sewing Machines
The Jack A4 is a computerized direct drive lockstitch machine with automatic thread trimming and backtacking. Energy-efficient and quiet operation.
| Material | High-Carbon Steel |
| Compatibility | Walking Foot & Bartack Machines |
| Bobbin Size | Standard Industrial (Juki Style M) |
| Pack Quantity | 10 Bobbins |
| Finish | Polished Steel |
| Weight (per bobbin) | Approx. 5 grams |